SAL GP-35 Air horns

From what I can tell in Warrne Calloway's Seaboard Diesels book, it appears that the SAL GP-35s had three chime horns, all bells facing forward. Am I correct? Also, who made and what model were the horns?

This is an answer to Danny Harmons question. The unpleasant sounding
horns you are hearing are Leslie S5-Ls, not three. The Leslies are
much louder than the Nathans. The Nathans on the other hand are much
more melodic. (incidentally, this is a major reason why everyone is
switching) If I were you, I would try to get a recording of those
Leslies as soon as possible. Reason being; they are disappearing
rapidly. This is due to the tremendous cost of adapting them to the
modern locomotive. Leslies were originally designed to be used with
the "ol' reliable" hand operated pull chord. With the advent of the
new push button solenoid valve, the crews are discovering the bellows
on both the old and new Leslies can't withstand the blast of air. The
Nathans, on the other hand, even though they have their problems, are
much more reliable and can withstand that massive blast from the
solenoid valve.

This isn't an answer, but another question:
Are those Leslie S3-L's the same horns that stil exist on some CSX units? I remember as a kid growing up in Tallahassee watching SAL & SCL freights and listening to those honking, non-melodious horns.
I still occaisionly hear them on CSX today, and I still don't like 'em. Thanks.